Water-motor.



PATENTED JAN.. 29

L. c. LEWIS. WATER MOTOR.

APPLICATION FILED 0OT.6. 1905.

2 SHEETS-SHEET 1.

' lNVENTOR [6mm 6- Lew ATTORNEYS PATENTED JAN. 29, 1907. L. G. LEWISWATER MOTOR.

APPLIOATION FILED 0016. 1905.

' 2 sums-sum z.

ATTORNEYS win 'INVENTOR Lao/365911113 I llllli Improvements inWater-Motors, of which the 3 produce a motor which will be stron 3.

rinirnn STATES PATENT .Ionnron.

Lnwrs'o. LEWIS, or COLUMBUS, OHIO, ASSIGNOR T O T'HE MONARCH MANU-FAOTURlNG OOMPANY, or COLUMBUS, OHIO, h CORPORATION or OHIO.

WATER-MOTOR.

To all, uih'oml it may concern.

Be it known that I, LEw'IsO. Lnwis, a ci-tizen of the United States,residing at Columbus, in the county'of Franklin and State of .Ohio, haveinvented certain-new and useful following is a specification.

My invention relates .to new and useful 1 'p provementsin water-motors.

The object of the invention is to produce -a simple motor of superiorconstruction in which a comparatively few number of parts are employed,thus reducin the wear and lengthening the intervals w en repairs be comenecessary, g

It is also an ob'ect to so construct and arran e the parts t at accessthereto may be easiyand readily had. 5

-Still another 'featureresides in the provision fluid without the use ofauxihary valves or tappets.

Among. other objects is. the provision whereby a steady-and continuousmovement l of the iston-head is had and the liability of -.-poun5ingreduced to a' minimum.

Finally the object of theinvention is to ,durable, and'efiicient and onein which t eseveral parts will not be liable to get, out of workingorder.

' With the-above and other objects in view the invention consists of thenovel details of construction and operation, a preferable em-v bodimentof which is' described in-the specification and illustrated in theaccompanying z drawings, wherein Figure 1 is a longitudinal sectionalview of '40 the motor, thepiston tr ke a d the-mainvalve shifted. Fig.2. is opposite being at, one endof'its a like view with the plistonatthe' end of its stroke and t e valve shifte 111113116 oppositedirection. Fig.3isia partial longi tudinall sectional view showing thepistonhead near the end .of'its stroke, the spring ;compre'ssed andabout tocornplete the shift- ,ing of the valve, also showing theexhaust- Yports'open to relieve the pressure. F1 his a ransverse'sectional viewtaken on the me a a (if-Fig, l lookin'g-in thedirection'of the arrow, .Ei'g. the t e of Fig. 1, and Fig. 6 is a trans?Specification of Letters Patent;

of a main valve which is shifted by the action of the piston-head and'the pressure of the 5 is atransverse sectional view taken on PatentedJan. 29, 1907.

6,1905. Serial No- 281579.

Fig}: looking in the direction of the arrow.

' the drawings the numeral 1' designates the main or piston cylinder ofthe motor, which is provided at its ends with heads 2 and 3. Asuitably-constructedpiston-head 4 is arranged'in the cylinder and iscarried on the iston-rod 5, having. a solid portion 6 and a hollowportion 7, the solid portion terminating short of the piston-head andpassing through the cylinder-head 2, so as to be connected with the pumpor other device which it is desired to operate. The hollow portion 7 ofthe piston extends through, the piston-head 4 and is provided with aplurality of ports 8, which communicate with the cylinder 1 between thepiston-head and the" cylinder-head 2. The cylinder-head 3 isprovidedwith an'outwardlydirected an ular boss 9, preferably four=sided. A cydi'ndrical valve-sleeve 14, having a diameter less than thatof the boss 9, is extended therefrom. The valve-sleeve is prothreadedflange 13, having an annular boss or shoulder portion 15, correspondingto the boss 9.

Two packing-strips 12 are supported at each end-on the bosses-9 and 15and receive plates 11, which aresuit'ably secured in lace. ide' plate 18are 'formed integral wit .the valve-sleeve-IM and the bosses 9 and 15,so that interspaces are provided between the plates 11 and thevalve-sleeve. One of the plates 1 1 is provided with a nipple 16,through which the fluid under pressure is supplied, while the plateopposite is provided with a nipple 1 7, through which the exhaust isconplates,

between the valve-sleeve and.the packing 12 versesectional view taken onthe line y y of ducted. The interspace between one of the vided at itsouter end with an annular screwchamber 21.: Transverse ribs 22-,extending ports being located between the ribs.

haust fluid passing into the chamber 21 must first pass through one ofthe ports ,24 into the valve-sleeve and out through the port 23 before-passing through the exhaust-nipple 17.

An internally-screw-threaded collar 25 is engaged about the annularscrew-threaded flange 13 and is provided with an inwardlyextendingannular screw-threaded flange 26, into which the end of anextension-sleeve 27 is screwed. The extension-sleeve 2 7'has a diameterslighter larger than that of the valvesleeve 14 and is closed at itsouter end by a screw-threaded cap 28. The hollow portion 7 of thepiston-rod extends through the valve sleeve 14 and well into-the casing27, carrying onits end a threaded washer 29. One or more inclined orts30 extend through the flange 13 and boss 15, establishing communicationbetween the interior of thesleeve 27 and the exhaustpassa e 21, whileone or more ports 31 extend t *ough the c linderhead 3 and the angularboss 9, esta .lishing communication between the opposite end-of,

the exhaust-chamberZl and the cylinder 1.

Within the valve-sleeve 14- I arrange a doubleheaded slide-valve 32. Thevalve 32 comprises a central tubular portion 33, provided at eachend-with internally-threaded flanged portions and fitting snuglabout'the hollow portion 7 of the piston-r0 '5. About each of-theflanged portions of the tubular member 33 oppositely-directed annularcupleathers 34 are arranged, the said leathers,

having their peripheries fitting snugly Within the sleeve 14. Theleathers are held in place by flanged thimbles 35, each of which supports an annular cup-leather 36, similar to tl'ie cup-leather 34 anddirected toward the same. The last-named cup-leathers are securely heldin place on the'thimbles-by'rings 37, threaded on the extreme ends ofthethimbles, and thus-the valve. The cup-leathers at each end of the valveare separated so that the valve may be positioned to cause them to standon each side-of one of the sets of ports 20 of the supply-chamber 19,but when so 0- sitioned acting to confinethe fluid there etween andprevent the same frompassi into the bore of thesleeve. In-the outeren ofthe sleeve 14 and withinthe flange 13a guard-ring 38 is threaded, saidring"being provided to prevent-the valve from being moved out of thesleevewhen shifted, as hereinafter described. About the "pistonrod andat each end of the valve I loosely mountsuitable coiled springs 39,thesaid springs being only of suflicient length to shift the valve whencompressed.

I wil 'scription of the operation of my pump.

Referring to Fig. 2, the piston-head 4 is shown at the'end of its outerstroke and about to commence its inward stroke and the valve 32 havingbeen shifted. Fluid. intro duced through the ni ple 16 fills the chamber19 and passes t the right ban of the chamber is confined between theleathers 34 and 36 of the valveough the ports 20. That portion (passingthrough the ports 20 at 1 head at the right hand, as clearly shown inFig. 2, while the remainder of the fluid is free.

to pass through the ports 20 at the left-hand end of the sleeve into thebore of the sleeve 14 and through the ring. 38 into the sleeve extension27. Fluid introduced into the sleeve extension 27 under pressure entersthe hollow portion 7 of the piston-rod 5 and passes therethrough t0 theports 8, out through which it passes into-thecylinder 1 behind thepiston-head 4, thus .acting to .drive the same inward and cause theinward stroke of the piston-head. With the valve in this position andstill referring to Fig. 2 the ports 24 at the left-hand end of thesleeve 14 .are

closed by the cup-leather 34, while the ex haust-ports 24 at the otherend are uncovered and opened, so that the exhaust fluid in the cylinder1 is free to ass throughthe ports-31 into the exhaust-c amber 21 at the,righthandend. From this point it is free to pass IOC through theuncovered ports 24 into the.

valve-sleeve 14 and out through the ports 23 to the exhaust-nipple 17.As the fluid issu plied and the piston-head driven inward t e valveremains in the same positionuntil the piston-head 4 nears the end of itsstroke. As thejs aid piston-head approaches the end of its "inwardstroke it encounters the coiled spring 39, mounted von the pistonrod andbearing )against the right-hand end of the valve. ton head continues tomove, and as :the spring-is compressed the valve 32 is moved or s iftedto the left until it reaches the position Shown in Fig. 3. B observingFig. 3 it will be seen that the va ve is so positioned'that the supplyor inlet orts 20;at each end of the .valveleeve are c osed by thecup-Qleathers 36, while the exhaust-ports 24.-at each end lieve. on bothsidesof the valve. 1 Itis also .ressure "being Jrelieved'by the openingof g'othitheexhaust-ports, the spring 39, which 'has been compressed, isfree to expand,

The spring is compressed as the pisrro .120 are 0 en, so that pressureof the fluid islre- 1 fined between the leathers of-the valve at thatend, while the fluid under pressure, passing through the ports at theright, en-

- ters through the openin'glO of the head 3 into the cylinder 1 againstthe piston-head 4, thus forcing the same outward: The exhaust-ports 24at the ri ht-hand end of the sleeve are closed bythe leather 345, whilethe opposite orts 24 are open. fluid in t e cylinder 1 as thepiston-head moves outward passes through theports 8 into the hollowportion 7 of the piston-rod 5. Passing through the said hollow portionthe exhaust fluid enters the sleeve extension 27, from which it passes,by way of the ports 30 chamber 21, ports 24 and 23, to the"exhaustnipple 17 The valve remains in this position, as shown in Fig.1, until the piston approaches the end of its outward stroke, when thespring 39 at the left hand of the valve is compressed by the washer 29and the valve shifted in the same manner as before described, so that itis moved to the position shown in Fig. 2. The inward and outward strokesof the iston and the shifting of the valve is carried on in the mannerdescribed as the motor continues to operate.

I wish to call attention to the fact that by simply unscrewing andremoving the sleeve extension 27 and the guard-ring 38 the slidevalvemay be readily exposed to view and by removing the washer 29 the spring39 and the valve may be entirely removed, for whatever purposes desired,and access to the valve sleeve 14 had. On the other hand, access isreadily had to either the supply or exhaust chambers 19 and 21 by simplyremoving the plates 11 and to the cylinder and" the righthand end of thevalve-sleeve by simply disconnecting the cylinder from the head 3.Another point of advantage and novelty to which attention is invited isthe fact that only four cup-leathers are employed, which greatly reduccsthe intervals between, as well as the cost of repairs, which, it isobvious, are often necessary and depend in proportion to the number ofcupployed. g

Having now fully described my invention, what I claim, and desire tosecure by Letters Patent, is

1. In a fluid-motor, a cylinder, a pistonhead working in the cylinder,an extensionsleeve, a hollow pistonrod carrying'the piston-head andarranged to establish communication between the cylinder and the sleeve,

provision for supplying and exhausting fluid The exhaust eathers orpackings e mto and from the cylinder and'sleeve, 'andja valve interposedbetween the cylinder and. sleeve extension having movable engagementwith the piston-rod adaptedto control the su ply and exhaust of fluid toand from the cy inder and the-sleeve.

2. A sleeve provided with suitable inlet and exhaust ports and provisionfor supplyin and exhausting fluid to and from said sleeve, incombination-with a piston and a valve having a plurality of leatherss'nugly fitting within the sleeve, and provision for moving said valveto cause its leathers to alternately cover and uncover the ports in thesleeve and during certain periods to cover both the supply-ports and,uncover both of the exhaust-ports.

3. In a fluid-motor, a cylinder, a pistonhead working in the cylinder, avalve-casing associated with one end of the cylinder, a sleeve extensionassociated with the valvecasing, a hollow piston-rod carrying thepiston-head extending through the valve-casing into the sleeve andarranged to establish communication between the cylinder beyond thepiston-head and the sleeve, and a valve having movable engagement withthe pistonrod arranged in the valve-casing.

4. In a fluid-motor, the combination with a cylinder, anextension-sleeve, a piston and a piston-rod working in the cylinder andthe sleeve and establishing communication therebetween, of avalve-casing provided with. a supply and an exhaust chamber and disposedbetween the cylinder and the extensionsleeve, the said casing havingports establishingcommunication between the sleeve and one end of theexhaust-chamber ing having supply-ports communicating with thesupply-chamber and exhaust-ports communicating'with the exhaust-chamber,anda free sliding valve arranged on the pistonrod in the valve-sleeveand adapted to alternately cover and uncover the ports leading to thesupplychamber and the exhaustchamber. v j

' 5. In a water-motor, the combination with a cylinder, of a pistonmounted for recipro-, catory motion-in said cylinder, a valve-casing,a'valve sli'dably disposed in said valvecasing an extension-sleeveextending beyond the end of the valve-casing, a hollow pistonrod towhich the piston is secured, said piston-rod being arranged to establishcommu-' nication between the sleeve extension and the interior of thecylinder beyond the piston,

and the cyl .inder and the opposite end of the exhaustchamber, avalve-sleeve arranged in the casand having a member arranged upon itsouter end adapted to shift said valve at'the limit of movement of thepiston away from the sleeve extension.

6.. In a device of the character described, the combination with acylinder, of a piston mounted for reciprocatory movement in saidcylinder a valve casing located adjacent said cylinder, a sleeveextending from said valve-casing and closed at its outer end, means foradmit-ting fluid under pressure to the valve-casing, means forconducting said fluid from said valve-casing, a hollow pistonrod securedto the piston and extending through the valve-casing and into thesleeve, said piston-rod being adapted to establish communication betweensaid sleeve and the interior of the cylinder beyond the piston, andavalve located in the valve-casing and adapted to be shifted when thepiston reaches its limit of movement in either direction.

In testimony whereof I allix my signature in presence of two witnesses.

LEWIS C. LEVIS.

Witnesses:

A. L. PHELPS, M. B. ScHLEY.

